Creates a new continuous-phase modulation object.

Parameters:¶

order: int¶

The modulation order $M=2^k$.

index: float = 0.5¶

The modulation index $h$. The modulation index is the ratio of the frequency deviation to the symbol rate $h=\mathrm{\Delta }f/f_{sym}$. The phase change per symbol is $\pi h$.

symbol_labels: 'bin' | 'gray' | TypeAliasForwardRef('~numpy.typing.ArrayLike') = 'bin'¶

The decimal symbol labels of consecutive complex symbols.

• "bin": The symbols are binary-coded. Adjacent symbols may differ by more than one bit.

• "gray": The symbols are Gray-coded. Adjacent symbols only differ by one bit.

• npt.ArrayLike: An $M$-length array whose indices are the default symbol labels and whose values are the new symbol labels.

phase_offset: float = 0.0¶

A phase offset $\varphi$ in degrees.

sps: int = 8¶

The number of samples per symbol $f_s/f_{sym}$.

pulse_shape: TypeAliasForwardRef('~numpy.typing.ArrayLike') | 'rect' = 'rect'¶

The pulse shape $h[n]$ of the instantaneous frequency of the signal. If a string is passed, the pulse shape is normalized such that the maximum value is 1.

• npt.ArrayLike: A custom pulse shape. It is important that sps matches the design of the pulse shape. See Pulse shaping.

• "rect": Rectangular pulse shape.

span: int = 1¶

The span of the pulse shape in symbols. This is only used if pulse_shape is a string.